Why are there three connections? Can I use two of them to plug this fan into a 12v battery?
596
Yes, the three wires consist of a pos, neg, and the third wire lets the motherboard read the rpm of the fan. so just find the pos and neg and your good to go.
1536082
You could use 12 VDC power (like a battery) to power the controller and the fan is then powered by the controller.
1080938
One connector goes to the solar panel, one to a battery and the other is for direct connector to another device. So unless you had a splitter from the dedicated battery lead, only one battery can be connected.
2090435
You can do that , in fact it is a 12 volt fan . It is a very small computer size fan and does not use much electricity ,however over time it will run the battery down . I have a solar panel on my RV that keeps the battery topped off.
1782666
Battery power goes directly to this unit. If the fan stays on when car is off, you need a new one. This is what happenef to me.
940433
Attach to the secondary side of a 12V ~5A Power supply and watch for spinning direction of the fan motor. If reverse running, swap polarity.
292522
mine is dc. I had battery drain problem. Wired it from a toggle switch to disconnect neg. batt cable. only energised with engine running problem solved. I don't know why it would't work for a fan
2221529
The unit specs are wrong on the website. The spec sheet on the controller it self calls for 12 volts ac for the power input. But it will run on 12 volts DC. It's just a relay that turns on and off when a certain temp is reached. So a standard 12v fan should work just fine.
1310044
This fan is 12 v dc, You have to use a 12v dc power supply 2-3 amp. They sell for about $8-$10. Solder leads to fan and plug in wall.
1684659
The fan works on 8 D batteries (12 volts DC) and the adapter works from 110 volts.
1976410
It is 12 volt DC to operate it and the contact are rated at 150 Amps @ 12 VDC. It could be used in an engine starting application, but is probably "over kill" for use to operate a fan. I would think a smaller relay would be better for a fan.
1103884
These fans are 12/24 DC, so you will need an AC-to-DC transformer between them and the AC outlet. The good news about this, however, is that the AC current draw will be VERY low.
1508345
I use mine this past weekend. I had the panel charging a 12V marine battery through a solar controller and had a 12v fan running in my trailer at the same time. Seemed to work just fine.
670634
Apparently one of the male ends has 3 and the other has 2. The female has 3. This is a typical connector for connecting cooling fans. Check your fan to see if it has 4 wires or 3 wires. It is designed to do both.
2226504
You can also join the 2 wires on the left if you have only 1 wire to connect to. Some fans have only 4 leads rather than 5.
1941940
It's designed to work from the 12V ports. If you have a port that connects directly to the battery (one that's on all the time it's the preferred one) otherwise you can use the port that you have available. You can't enclose it there has to be air circulation around it.
1298117
The wiring on the fan motor (in the down rod) to the wiring hub is rather long. The wires that go to the power leads are short, therefore you need to bring your power (house power) close in order to make the electrical connection. Hope this helps.